/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.flink.tsfile;

import org.apache.flink.api.common.ExecutionConfig;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.core.fs.FileInputSplit;
import org.apache.flink.types.Row;
import org.apache.iotdb.tsfile.common.conf.TSFileDescriptor;
import org.junit.Test;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;

/**
 * Tests for RowTsFileInputFormat.
 */
public class RowTsFileInputFormatTest extends RowTsFileInputFormatTestBase {

	@Test
	public void testReadData() throws IOException {
		TsFileInputFormat<Row> inputFormat = prepareInputFormat(sourceTsFilePath1);

		List<String> actual = new ArrayList<>();

		try {
			inputFormat.configure(new Configuration());
			inputFormat.openInputFormat();
			FileInputSplit[] inputSplits = inputFormat.createInputSplits(2);
			Row reuse = rowTypeInfo.createSerializer(new ExecutionConfig()).createInstance();
			for (FileInputSplit inputSplit : inputSplits) {
				try {
					inputFormat.open(inputSplit);
					assertEquals(config.getBatchSize(), TSFileDescriptor.getInstance().getConfig().getBatchSize());
					while (!inputFormat.reachedEnd()) {
						Row row = inputFormat.nextRecord(reuse);
						actual.add(row.toString());
					}
				} finally {
					inputFormat.close();
				}
			}
		} finally {
			inputFormat.closeInputFormat();
		}

		String[] expected = {
			"1,1.2,20,null,2.3,11,19",
			"2,null,20,50,25.4,10,21",
			"3,1.4,21,null,null,null,null",
			"4,1.2,20,51,null,null,null",
			"6,7.2,10,11,null,null,null",
			"7,6.2,20,21,null,null,null",
			"8,9.2,30,31,null,null,null"
		};
		assertArrayEquals(actual.toArray(), expected);
	}

	@Test
	public void testGetter() {
		TsFileInputFormat<Row> inputFormat = prepareInputFormat(sourceTsFilePath1);

		assertEquals(parser, inputFormat.getParser());
		assertEquals(queryExpression, inputFormat.getExpression());
		assertEquals(config, inputFormat.getConfig().get());
		assertEquals(parser.getProducedType(), inputFormat.getProducedType());
	}
}
